Grundy is a county in Missouri. It was formed in 1841 from the following county/ies: Livingston. Grundy began keeping birth records in 1847–93*, marriage records in 1841, and death records in 1883–93. It began keeping land records in 1841, probate records in 1863, and court records in 1841. For more information, contact the county at 700 Main St. Trenton 64683. On the attached map, Grundy is located at B3. *Records incomplete. Birth records extant for 1847—66 and 1883—93 only.